Electric toothbrush



1.1 is a front perspective view of an electric toothbrush showing our new design;

1.2 is a front elevation view thereof;

1.3 is a rear elevation view thereof;

1.4 is a right side elevation view thereof;

1.5 is a left side elevation view thereof;

1.6 is a top plan view thereof; and

1.7 is a bottom plan view thereof.

The broken lines in the reproductions illustrate portions of the electric toothbrush that form no part of the claimed design. 

CLAIM The ornamental design for an electric toothbrush, as shown and described. 